ci: use explicit Neovim version for "Lint" workflow

Author: echasnovski

.github/workflows/lint.yml

@@ -31,6 +31,7 @@ jobs:
         uses: rhysd/action-setup-vim@v1
         with:
           neovim: true
+          version: v0.10.3
       - uses: actions/checkout@v4
       - name: Generate documentation
         run: make --silent documentation
@@ -47,6 +48,7 @@ jobs:
         uses: rhysd/action-setup-vim@v1
         with:
           neovim: true
+          version: v0.10.3
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0